time_add         3629 time.c             return time_add(tobj, time2, 1);
time_add         3659 time.c             return time_add(tobj, time2, -1);
time_add         3762 time.c                 return time_add(tobj, v, -1);
time_add         3764 time.c                 return time_add(tobj, sub(den, v), 1);